Sun Blaster Lighting™ 125 watt fluorescent light bulb. This fluorescent bulb is an all-purpose bulb for use in the garden, office, warehouse, or home environment where flicker free lighting is desired. The Sun Blaster Lighting lamp comes in a FULL Spectrum (6400K) . You DO NOT need a ballast to use this bulb, plug in and go. So whether you manage a commercial warehouse, are a plant hobbyist, or just a home user. Just think about the cost savings on your electric bills. Not to mention the fact that every light comes with a built in ballast, initial install ends up costing less than convention lighting. All Sun Blaster Lighting Bulbs have a life expectancy of 10,000 hours or more before the intensity will diminish.